{"product_id":"a-naftuly-iridium-spark-plugs-6-pack-lfr5aix11-0-6mm-fine-wire-laser-welded-for-nissan-infiniti-3-5l-4-0l-v6","title":"A-NAFTULY Iridium Spark Plugs 6-Pack LFR5AIX11 — 0.6mm Fine-Wire, Laser-Welded for Nissan\/Infiniti 3.5L \u0026 4.0L V6","description":"\u003cstrong\u003eA-NAFTULY Iridium Spark Plugs (6-pack, LFR5AIX11) are high-durability replacements engineered to restore reliable ignition and efficient combustion for compatible 3.5L and 4.0L V6 engines.\u003c\/strong\u003e\n\n\u003cp\u003eThese premium iridium spark plugs are built with a 0.6 mm fine-wire center electrode and laser-welded construction to deliver precise spark delivery and long service life. They are supplied as a set of six and designed to match factory fitment for many Nissan, Infiniti, Toyota, Hyundai, and Kia V6 models. The lightweight, high-melting-point iridium tip resists wear and helps maintain stable combustion over miles of driving.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will these spark plugs fit?\u003c\/h3\u003e\n\u003cp\u003eThese A-NAFTULY plugs are compatible with a wide range of V6 engines, primarily Nissan and Infiniti 3.5L applications plus several 4.0L V6 platforms. Fitment covers multiple model years—verify your engine code and plug reference before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrimary fit: 2002–2006 Nissan Altima 3.5L, 2002–2008 Maxima 3.5L, 2003–2007 Murano 3.5L, 2003–2006 350Z 3.5L.\u003c\/li\u003e\n  \u003cli\u003eAlso fits: 2005–2019 Frontier 4.0L, 2005–2012 Pathfinder 4.0L, 2004–2009 Quest 3.5L, 2005–2015 Xterra 4.0L, select NV models.\u003c\/li\u003e\n  \u003cli\u003eInfiniti compatibility: G35, FX35, I35, M35, and QX4 years listed in product specs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these iridium plugs improve performance or longevity?\u003c\/h3\u003e\n\u003cp\u003eThe fine-wire iridium center electrode requires less voltage to fire and sustains sharper, more consistent sparks. That stability supports smoother starts, steadier idling, and extended service intervals compared with standard copper plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0.6 mm iridium tip lowers required ignition voltage for reliable firing.\u003c\/li\u003e\n  \u003cli\u003eLaser-welded construction reduces electrode erosion under heat and electrical stress.\u003c\/li\u003e\n  \u003cli\u003eIridium alloy offers higher melting point and greater wear resistance than platinum or copper.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before installation?\u003c\/h3\u003e\n\u003cp\u003eConfirm the reference number and thread specification match your engine’s factory recommendation to avoid fitment issues. Inspect ignition coils, boot condition, and torque requirements to ensure correct installation and optimal plug life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompare part numbers: 4469, LFR5AIX-11 and listed cross-references in the product details.\u003c\/li\u003e\n  \u003cli\u003eCheck thread pitch, seat type, and gap—adjust or verify gap if required per vehicle manual.\u003c\/li\u003e\n  \u003cli\u003eReplace coils or boots if cracked or contaminated to prevent misfires after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat do I get in the box and what support is offered?\u003c\/h3\u003e\n\u003cp\u003eThe package contains six iridium spark plugs with the stated reference number; A-NAFTULY provides a 12-month limited warranty and customer support if you encounter defects or fitment questions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSet of 6 iridium spark plugs, prepped for installation in compatible engines.\u003c\/li\u003e\n  \u003cli\u003eManufacturer support and a 12-month worry-free warranty through A-NAFTULY.\u003c\/li\u003e\n  \u003cli\u003eClear cross-reference list included so you can confirm compatibility with OEM numbers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These spark plugs suit do-it-yourself mechanics and professional technicians maintaining mid-2000s Nissan and Infiniti V6 vehicles, plus owners of certain Toyota, Hyundai, and Kia V6 models who want a durable iridium upgrade. If you need parts that match OEM specifications while offering improved electrode wear resistance and consistent spark performance, this A-NAFTULY 6-pack is a practical, long-lasting replacement option.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these plugs pre-gapped for my engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They come set but always verify and adjust the gap to your vehicle's specification before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these replace OEM LFR5AIX-11 plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they are designed as compatible replacements for LFR5AIX-11 and listed cross-reference numbers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-NAFTULY","offers":[{"title":"Default Title","offer_id":48084902084766,"sku":"B0DD7GW9D9","price":37.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-naftuly-front-packaging_31215819-dc7b-47c9-b53b-b9b42b2b271a.jpg?v=1785865730","url":"https:\/\/northtrailauto.ca\/products\/a-naftuly-iridium-spark-plugs-6-pack-lfr5aix11-0-6mm-fine-wire-laser-welded-for-nissan-infiniti-3-5l-4-0l-v6","provider":"North Trail Auto","version":"1.0","type":"link"}